Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantos conjuntos Gary Muller tinha?
 ###Tabelas: CREATE TABLE women's_tournament (women's_tournament_id AUTO_INCREMENT PRIMARY KEY, Position VARCHAR, Height (cm) INT, Weight (kg) INT, Birthplace VARCHAR, 2009–10 team VARCHAR) CREATE TABLE men (men_id AUTO_INCREMENT PRIMARY KEY, Aces INT, Player VARCHAR, Opponent VARCHAR, Event VARCHAR, Sets INT) CREATE TABLE pool_4 (pool_4_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Tries for VARCHAR, Tries against VARCHAR, Try diff VARCHAR, Points for VARCHAR, Points against VARCHAR, Points diff VARCHAR) CREATE TABLE cities_over_1000000_population (cities_over_1000000_population_id AUTO_INCREMENT PRIMARY KEY, Rank INT, City VARCHAR, Province VARCHAR, Date of Official Foundation of Municipality INT, 2006 INT, 1996 INT, 1986 INT, 1976 INT, 1966 INT, 1956 INT) CREATE TABLE living_canadian_supercentenarians (living_canadian_supercentenarians_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Birth date VARCHAR, Age as of 1 February 2014 VARCHAR, Province or Country of birth VARCHAR, Province of residence VARCHAR)  
SELECT COUNT Sets FROM men WHERE Player = gary muller